WO2023143362A1

WO2023143362A1 - Secondary cell group configuration method and apparatus, chip and module device

Info

Publication number: WO2023143362A1
Application number: PCT/CN2023/073124
Authority: WO
Inventors: 邓云
Original assignee: 展讯通信（上海）有限公司
Priority date: 2022-01-28
Filing date: 2023-01-19
Publication date: 2023-08-03
Also published as: CN116567757A

Abstract

Disclosed in the present application are a secondary cell group configuration method and apparatus, a chip and module device. The method comprises: a source master node (MN) sends a conditional handover request message to a candidate MN; the source MN receives a conditional handover request acknowledgement message from the candidate MN, the conditional handover request acknowledgement message comprising configuration information of a candidate master cell group (MCG) and configuration information of a candidate secondary cell group (SCG); and the source MN sends to a terminal device the configuration information of the candidate MCG and the configuration information of the candidate SCG. By means of said configuration method, the terminal device performing dual connectivity can configure the configuration information of the candidate MCG and the configuration information of the candidate SCG at the same time, thereby reducing signaling overhead and saving transmission resources.

Description

A secondary cell group configuration method, device, chip and module equipment

technical field

The present invention relates to the communication field, in particular to a secondary cell group configuration method, device, chip and module equipment.

Background technique

The dual connection mechanism enables the terminal device to simultaneously use the resources of two base stations (ie, the primary base station and the secondary base station) for data transmission, which not only improves the data throughput rate, but also improves the mobility performance of the terminal device. Wherein, the primary base station configures an available primary cell group for the terminal device; the secondary base station configures an available secondary cell group for the terminal device to associate, and the secondary cell group includes a primary secondary cell and other secondary cells. During the mobile process of a dual-connection terminal device, the terminal device can switch from the source master base station to the target master base station (or it can be understood that the terminal device switches from the source master cell group to the target master cell group), and can also switch from the source master base station to the target master cell group. The source secondary base station is handed over to the target secondary base station (or it can be understood that the terminal device switches and connects from the source secondary cell group to the target secondary cell group).

In the communication R17 standard, the conditional handover on the primary base station side (ie, the conditional handover of the primary cell) and the conditional primary-secondary cell handover on the secondary base station side (ie, the conditional update of the primary-secondary cell) of the terminal equipment cannot be configured at the same time. In other words, if a terminal device in dual connectivity is configured with a candidate primary cell group, it cannot configure a candidate secondary cell group. If you need to configure dual connectivity after handover, you need to wait for the terminal device to switch to the target primary cell, and then configure the secondary cell group by the target primary cell. Such secondary cell group configuration will increase signaling overhead and cause waste of transmission resources. It will also increase the delay of configuring the secondary cell group.

Contents of the invention

The present application provides a secondary cell group configuration method, device, chip, and module device. A terminal device performing dual connections can configure configuration information of candidate MCGs and candidate SCGs at the same time, which is conducive to reducing signaling overhead and saving transmission resource.

In a first aspect, the present application provides a secondary cell group configuration method, the method comprising: sending a conditional handover request message to a candidate master base station MN; receiving a conditional handover request confirmation message from a candidate MN, the conditional handover request confirmation message including a candidate primary cell The configuration information of the group MCG and the configuration information of the candidate secondary cell group SCG; sending the configuration information of the candidate MCG and the configuration information of the candidate SCG to the terminal device.

Based on the secondary cell group configuration method provided in the first aspect, the candidate SCG configuration information can be sent to the terminal device at the same time as the candidate MCG configuration information. Through such an SCG configuration method, it is beneficial to reduce signaling overhead and save transmission resource.

In a possible implementation manner, the conditional handover request message includes capability information of the terminal device, and the capability information of the terminal device is used to indicate that the terminal device has the capability of simultaneously configuring the candidate MCG and the candidate SCG. By implementing this possible implementation mode, only when the terminal device has the ability to configure candidate MCGs and candidate SCGs at the same time, the configuration information of candidate MCGs and candidate SCGs are sent to the terminal device to avoid waste of resources.

In a possible implementation manner, the conditional handover request acknowledgment message further includes first indication information, where the first indication information is used to indicate the configuration mode corresponding to the configuration information on the target side, or the configuration mode corresponding to the configuration information of the candidate SCG; Wherein, the target side includes candidate MCGs and candidate SCGs; the configuration mode corresponding to the configuration information of the target side is Incremental signaling configuration mode or full configuration mode; the configuration mode corresponding to the configuration information of the candidate SCG is incremental signaling configuration mode or full configuration mode.

In a possible implementation method, the configuration mode corresponding to the configuration information of the target side is the incremental signaling configuration mode, or the configuration mode corresponding to the configuration information of the candidate SCG is the incremental signaling configuration mode, and the source MN sends the A notification message, the notification message is used to notify that the configuration parameters of the source SCG are updated, and the notification message includes the updated configuration parameters of the source SCG.

In a possible implementation method, the source MN receives the updated configuration information of the candidate secondary cell group SCG and the configuration information of the candidate primary cell group MCG from the candidate MN, and the updated configuration information of the candidate SCG uses the updated source SCG Based on the configuration parameters set.

In a possible implementation method, the configuration information of the candidate SCG is used to indicate whether the conditional handover request confirmation message includes the configuration information of the candidate SCG. Through such an implementation method, the parameter configuration method is explicitly indicated in the interface signaling, and the source MN can know whether to notify the candidate MN side to update the candidate SCG when the configuration parameters on the source side change without analyzing the specific candidate SCG configuration information configuration information. Once the source MN realizes that the configuration parameters of the SCG on the source side change, it needs to notify the candidate MN to update the configuration information of the candidate SCG in time, so as to avoid the outdated configuration information of the candidate SCG previously saved by the terminal device, thereby preventing the terminal device from using the outdated configuration of the candidate SCG Information access, causing wireless link failure.

In a second aspect, the present application provides a secondary cell group configuration method, the method comprising: receiving a conditional handover request message from a source master base station MN; sending a conditional handover request confirmation message to the source MN, the conditional handover request confirmation message including candidate master Configuration information of the cell group MCG and configuration information of candidate secondary cell groups SCG.

Based on the secondary cell configuration method provided in the second aspect, its beneficial effects can be referred to the beneficial effects of the first aspect above, and repeated descriptions will not be repeated here.

In a possible implementation method, the conditional handover request message includes capability information of the terminal device, and the capability information of the terminal device is used to indicate that the terminal device has the capability of simultaneously configuring the candidate MCG and the candidate SCG.

In a possible implementation method, the conditional handover request confirmation message further includes first indication information, where the first indication information is used to indicate the configuration mode corresponding to the configuration information on the target side, or the configuration mode corresponding to the configuration information of the candidate SCG; Wherein, the target side includes candidate MCG and candidate SCG; the configuration mode corresponding to the configuration information of the target side is incremental signaling configuration mode or full configuration mode; the configuration mode corresponding to the configuration information of the candidate SCG is incremental signaling configuration mode or full configuration.

In a possible implementation method, the configuration mode corresponding to the configuration information of the target side is the incremental signaling configuration mode, or the configuration mode corresponding to the configuration information of the candidate SCG is the incremental signaling configuration mode, and the candidate MN receives the A notification message, which is used to notify that the configuration parameters of the source SCG are updated, and the notification message includes the configuration parameters of the updated source SCG; if the configuration parameters of the updated source SCG are associated with the configuration parameters of the candidate SCG, the candidate MN is based on The updated configuration parameters of the source SCG update the configuration information of the candidate SCG; the candidate MN sends the updated configuration information of the candidate SCG to the source MN.

In a possible implementation method, the configuration information of the candidate secondary cell group SCG is used to indicate whether the conditional handover request confirmation message includes the configuration information of the candidate SCG.

In a third aspect, the present application provides a method for configuring a secondary cell group, the method comprising: a terminal device receiving configuration information of a candidate primary cell group MCG and configuration information of a candidate secondary cell group SCG from a source master base station MN.

Based on the secondary cell configuration method provided in the third aspect, its beneficial effects can be referred to the beneficial effects of the first aspect above, and repeated descriptions will not be repeated here.

In a possible implementation, if the primary and secondary cell switching conditions corresponding to the candidate SCG are not configured, when the terminal device accesses the candidate MN according to the configuration information of the candidate MCG, it simultaneously accesses the candidate SCG according to the configuration information of the candidate SCG .

In a possible implementation, if the primary-secondary cell handover condition corresponding to the candidate SCG is configured, after the terminal device accesses the candidate MN according to the configuration information of the candidate MCG, the primary-secondary cell handover condition corresponding to the candidate SCG is satisfied , access the candidate SCG according to the configuration information of the candidate SCG. In other words, in this case, the terminal device judges whether the update execution condition corresponding to the PSC corresponding to the candidate SCG is satisfied, and accesses the candidate SCG when the update execution condition corresponding to the PSC is satisfied.

In a possible implementation manner, there are one or more candidate SCGs, and each candidate SCG corresponds to a handover condition between primary and secondary cells. In other words, if the terminal device receives configuration information of multiple candidate SCGs, each candidate SCG corresponds to a primary-secondary cell handover condition. After the terminal device accesses the candidate MN according to the configuration information of the candidate MCG, the terminal device accesses the candidate SCG according to the PSC handover condition corresponding to each candidate SCG and when the PSC handover condition of a candidate SCG is met.

In a fourth aspect, the present application provides a secondary cell group configuration device, which includes: a sending unit, configured to send a conditional handover request message to a candidate master base station MN; a receiving unit, configured to receive a conditional handover request confirmation from a candidate MN message, the conditional handover request confirmation message includes the configuration information of the candidate primary cell group MCG and the candidate secondary cell group SCG; the sending unit is also used to send the configuration information of the candidate MCG and the configuration information of the candidate SCG to the terminal device.

In a possible implementation manner, the conditional handover request message includes capability information of the terminal device, and the capability information of the terminal device is used to indicate that the terminal device has the capability of simultaneously configuring the candidate MCG and the candidate SCG.

In a possible implementation manner, the conditional handover request acknowledgment message further includes first indication information, where the first indication information is used to indicate the configuration mode corresponding to the configuration information on the target side, or the configuration mode corresponding to the configuration information of the candidate SCG; Among them, the target side includes candidate MCG and candidate SCG; the configuration mode corresponding to the configuration information of the target side is incremental signaling configuration mode or full configuration mode; the configuration mode corresponding to the configuration information is incremental signaling configuration mode or full configuration mode Way.

In a possible implementation method, the configuration mode corresponding to the configuration information of the target side is the incremental signaling configuration mode, or the configuration mode corresponding to the configuration information of the candidate SCG is the incremental signaling configuration mode, and the sending unit is used to send the candidate SCG The MN sends a notification message, which is used to notify that the configuration parameters of the source SCG are updated, and the notification message includes the updated configuration parameters of the source SCG.

In a possible implementation method, the receiving unit is configured to receive the updated configuration information of the candidate secondary cell group SCG and the configuration information of the candidate primary cell group MCG from the candidate MN, and the updated configuration information of the candidate SCG is in the form of the updated Set based on the configuration parameters of the source SCG.

In a possible implementation method, the configuration information of the candidate SCG is used to indicate whether the conditional handover request confirmation message includes the configuration information of the candidate SCG.

In a fifth aspect, the present application provides a device for configuring a secondary cell group, which includes: a receiving unit, configured to receive a conditional handover request message from the source master base station MN; a sending unit, configured to send a conditional handover request confirmation message to the source MN The conditional handover request confirmation message includes the configuration information of the candidate primary cell group MCG and the configuration information of the candidate secondary cell group SCG.

In a possible implementation method, the device further includes a processing unit, the configuration mode corresponding to the configuration information of the target side is an incremental signaling configuration mode, or the configuration mode corresponding to the configuration information of the candidate SCG is an incremental signaling configuration mode, The receiving unit is configured to receive a notification message from the source MN, the notification message is used to notify that the configuration parameters of the source SCG are updated, and the notification message includes the configuration parameters of the updated source SCG; if the configuration parameters of the updated source SCG and the candidate The configuration parameters of the SCGs are associated, the processing unit is configured to update the configuration information of the candidate SCGs based on the updated configuration parameters of the source SCG; the sending unit is configured to send the updated configuration information of the candidate SCGs to the source MN.

In a sixth aspect, the present application provides an apparatus for configuring a secondary cell group, which includes: a receiving unit configured to receive configuration information of a candidate primary cell group MCG and configuration information of a candidate secondary cell group SCG from a source primary base station MN.

In a possible implementation, the device further includes an access unit. If the primary and secondary cell handover conditions corresponding to the candidate SCG are not configured, when accessing the candidate MN according to the configuration information of the candidate MCG, the access unit uses to access the candidate SCG according to the configuration information of the candidate SCG.

In a possible implementation, if the primary-secondary cell handover condition corresponding to the candidate SCG is configured, after accessing the candidate MN according to the configuration information of the candidate MCG, when the primary-secondary cell handover condition corresponding to the candidate SCG is met, The access unit is configured to access the candidate SCG according to the configuration information of the candidate SCG.

In a possible implementation manner, there are one or more candidate SCGs, and each candidate SCG corresponds to a handover condition between primary and secondary cells.

In a seventh aspect, the present application provides a chip, including a processor and a communication interface, and the processor is configured to perform the following operations: send a conditional handover request message to a candidate master base station MN; receive a conditional handover request confirmation from a candidate MN The conditional handover request confirmation message includes the configuration information of the candidate primary cell group MCG and the candidate secondary cell group SCG; and sends the configuration information of the candidate MCG and the candidate SCG to the terminal device.

In an eighth aspect, the present application provides a chip, including a processor and a communication interface, the processor is configured to perform the following operations: receive a conditional handover request message from the source main base station MN; send a conditional handover request confirmation to the source MN message, the conditional handover request confirmation message includes the configuration information of the candidate primary cell group MCG and the configuration information of the candidate secondary cell group SCG.

In a ninth aspect, the present application provides a chip, including a processor and a communication interface, where the processor is configured to perform the following operations: receive configuration information of a candidate primary cell group MCG and a candidate secondary cell group from a source master base station MN SCG configuration information.

In a tenth aspect, the present application provides a module device, which includes a communication module, a power supply module, a storage module, and a chip, wherein: the power supply module is used to provide electrical energy for the module device; the storage The module is used to store data and instructions; the communication module is used to communicate within the module device, or to communicate between the module device and external devices; the chip is used to: send a conditional switching request message to the candidate main base station MN; The conditional handover request confirmation message of the candidate MN, the conditional handover request confirmation message includes the configuration information of the candidate primary cell group MCG and the candidate secondary cell group SCG configuration information; the configuration information of the candidate MCG and the candidate SCG configuration information are sent to the terminal device.

In the eleventh aspect, the present application provides a module device, which includes a transceiver component and a chip, and the chip includes a memory, a processor, and a computer program stored on the memory and operable on the processor, wherein the The processor is configured to: receive a conditional handover request message from the source master base station MN; send a conditional handover request confirmation message to the source MN, where the conditional handover request confirmation message includes configuration information of the candidate primary cell group MCG and candidate secondary cell group SCG configuration information .

In a twelfth aspect, the present application provides a module device, which includes a transceiver component and a chip, and the chip includes a memory, a processor, and a computer program stored on the memory and operable on the processor, wherein the The processor is configured to: receive the configuration information of the candidate primary cell group MCG and the configuration information of the candidate secondary cell group SCG from the source primary base station MN.

In a thirteenth aspect, the embodiment of the present invention discloses a base station, where the base station includes a memory and a processor, where the memory is used to store a computer program, where the computer program includes program instructions, and the processor is configured to invoke the program instructions, Execute the method in the above first aspect and any possible implementation thereof, or execute the method in the above second aspect and any possible implementation thereof.

In a fourteenth aspect, the embodiment of the present invention discloses a terminal device, the terminal device includes a memory and a processor, the memory is used to store a computer program, the computer program includes program instructions, and the processor is configured to call the program The instruction executes the method in the above third aspect and any possible implementation manner thereof.

In a fifteenth aspect, the present application provides a computer-readable storage medium, the computer-readable instruction is stored in the computer-readable instruction, and when the computer-readable instruction is run on the communication device, the communication device executes the above-mentioned first The method in the aspect and any possible implementation thereof, or execute the method in the above second aspect and any possible implementation thereof, or execute the method in the above third aspect and any possible implementation thereof method.

In a sixteenth aspect, the present application provides a computer program or a computer program product, including codes or instructions. When the codes or instructions are run on a computer, the computer executes the computer program described in the first aspect and any possible implementation thereof. method, or execute the method in the above second aspect and any possible implementation thereof, or execute the method in the above third aspect and any possible implementation thereof.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings that need to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

FIG. 1 is a schematic diagram of a communication system provided by an embodiment of the present application;

FIG. 2 is a schematic flow diagram of a conditional switching provided by an embodiment of the present application;

FIG. 3 is a schematic flowchart of a method for configuring a secondary cell group provided in an embodiment of the present application;

FIG. 4 is a schematic flowchart of another method for configuring a secondary cell group provided in an embodiment of the present application;

FIG. 5 is a schematic structural diagram of an apparatus for configuring a secondary cell group provided in an embodiment of the present application;

FIG. 6 is a schematic structural diagram of an apparatus for configuring a secondary cell group provided in an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a base station provided by an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a terminal device provided in an embodiment of the present application;

Fig. 9 is a schematic structural diagram of a module device provided by an embodiment of the present application;

Fig. 10 is a schematic structural diagram of a module device provided by an embodiment of the present application.

Detailed ways

The specific embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings.

The terms "first" and "second" in the specification, claims and drawings of the present application are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally further includes For other steps or units inherent in these processes, methods, products or apparatuses.

Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments.

In this application, "at least one (item)" means one or more, "multiple" means two or more, "at least two (items)" means two or three and three Above, "and/or" is used to describe the association relationship of associated objects, which means that there can be three kinds of relationships, for example, "A and/or B" can mean: only A exists, only B exists, and A and B exist at the same time A case where A and B can be singular or plural. The character "/" generally indicates that the contextual objects are an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one item (piece) of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c ", where a, b, c can be single or multiple.

In order to better understand the embodiment of the present application, the following firstly introduces the communication system involved in the embodiment of the present application:

The technical solution of the embodiment of the present application can be applied to various communication systems, for example: global system of mobile communication (global system of mobile communication, GSM) system, code division multiple access (code division multiple access, CDMA) system, broadband code division multiple access (wideband code division multiple access, WCDMA) system, general packet radio service (general packet radio service, GPRS), long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunications System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) Communication System, Fifth Generation (5G) system or new radio (new radio, NR) and future communication systems, etc.

Figure 1 is a schematic diagram of a communication system provided by an embodiment of the application, and the solution in this application can be applied to this communication system. The communication system may include a base station and a terminal device. FIG. 1 takes an example in which the communication system includes 2 base stations and 1 terminal device.

1. Terminal equipment

Terminal equipment includes equipment that provides voice and/or data connectivity to users. For example, terminal equipment is a device with wireless transceiver capabilities that can be deployed on land, including indoor or outdoor, handheld, wearable, or vehicle-mounted; it can also be deployed in On the water (such as ships, etc.); can also be deployed in the air (such as aircraft, balloons and satellites, etc.). The terminal can be a mobile phone, a vehicle, a roadside unit, a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, an industrial control (industrial control), wireless terminals in vehicle, wireless terminals in self driving, wireless terminals in remote medical, wireless terminals in smart grid, transportation safety ), wireless terminals in a smart city, wireless terminals in a smart home, wearable terminal devices, etc. The embodiments of the present application do not limit the application scenarios. Terminal equipment may sometimes be called terminal, user equipment (UE), access terminal equipment, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal equipment, mobile equipment, UE terminal equipment, terminal equipment, wireless communication equipment, UE proxy or UE device, etc. Terminals can also be fixed or mobile. In the embodiment of the present application, the device used to realize the function of the terminal device may be a terminal device, or a device capable of supporting the terminal device to realize the function, such as a chip system or a combined device or component that can realize the function of the terminal device. Can be installed in terminal equipment.

2. Base station

A base station is a node or device that connects a terminal device to a wireless network. The base station mentioned in this application includes, but is not limited to: base station (base station), evolved base station (evolved NodeB, eNodeB), transmission and reception point (transmission reception point, TRP), the next generation base station (next generation NodeB, gNB) in the fifth generation (5th generation, 5G) mobile communication system, the next generation base station in the sixth generation (6th generation, 6G) mobile communication system, the future Base stations in mobile communication systems or access nodes in WiFi systems, etc. The base station mentioned in this application may also be a module or unit that completes some functions of the base station, for example, it may be a centralized unit (central unit, CU) or a distributed unit (distributed unit, DU). The CU here completes the functions of the radio resource control protocol and the packet data convergence protocol (PDCP) of the base station, and also completes the function of the service data adaptation protocol (SDAP); the DU completes the functions of the base station The functions of the radio link control layer and the medium access control (medium access control, MAC) layer can also complete the functions of part or all of the physical layer. For specific descriptions of the above protocol layers, reference may be made to relevant technical specifications of the 3rd generation partnership project (3GPP). The base station mentioned in this application may be a macro base station, a micro base station or an indoor station, or a relay node or a donor node.

In the embodiment of the present application, the device used to realize the function of the base station may be the base station itself, or a device capable of supporting the base station to realize the function, such as a chip system or a combined device or component that can realize the function of the base station. The device can be installed in in the base station. The embodiment of the present application does not limit the specific technology and specific equipment form adopted by the base station.

In order to facilitate the understanding of the technical solutions of the present application, some of the nouns involved in the present application will be explained below first.

1. Dual Connectivity (DC)

The dual connection technology can provide terminal equipment with higher data transmission rate and use macro/micro networking to improve spectrum efficiency and load balance. As shown in FIG. 1 , a terminal device supporting dual connectivity can establish communication connections with two base stations at the same time, and the two base stations include a master base station (master node, MN) and a secondary base station (secondary node, SN). In this communication system, a terminal device supporting dual connectivity is configured with at least two cell groups, one is a master cell group (MCG) and the other is a secondary cell group (SCG). Wherein, the MCG refers to a cell group associated with the primary base station, and the MCG includes a primary cell (primary cell, PCell) and one or more secondary cells (secondary cell, SCell). The PCell in the MCG is a cell that establishes a radio resource control (Radio Resource Control, RRC) connection with the terminal device, and the PCell in the MCG is configured with physical uplink control channel (physical uplink control channel, PUCCH) resources. Usually, other SCells in the MCG are not configured with PUCCH resources. The SCG refers to a cell group associated with the secondary base station, and the SCG includes a primary secondary cell (PSCell) and one or more SCells. The PSCell in the SCG is the only serving cell configured with PUCCH resources in the SCG.

2. Conditional Hand Over (CHO)

The CHO mechanism is a mechanism to enhance the robustness of handover or secondary node addition, which can improve the handover success rate of terminal equipment. Specifically, a schematic flowchart of conditional handover by a terminal device may be referred to in FIG. 2 , including S201-S205. in:

S201. The source base station sends a conditional handover request to a candidate target base station.

S202. The candidate target base station allocates necessary wireless resources for the terminal equipment, and then sends a conditional handover request confirmation message to the source base station.

S203, the source base station sends configuration information of conditional handover to the terminal device, the configuration information includes the information of one or more candidate cells configured by the network device for the terminal device, and the handover conditions corresponding to each candidate cell (or referred to as handover execution conditions).

S204. After receiving the configuration information of the conditional handover, the terminal device evaluates whether each candidate cell satisfies the handover condition according to the configuration information.

S205. The terminal device takes a candidate cell that satisfies the handover condition as a target cell, and switches to the target cell.

In the conditional handover process shown in Figure 2, the source base station can send the configuration information of the conditional handover to the terminal device when the source link quality is good, so as to ensure the success rate of sending the configuration information, and then the terminal device according to the The configuration information selects the target cell by itself and performs handover, which can improve the success rate of handover.

3. Conditional PSCell Change (CPC)

The CPC mechanism can be understood as a conditional handover mechanism on the secondary base station side, also called a conditional update mechanism. The CPC mechanism is a process in which the MN or SN sends the configuration of candidate PSCells and the switching conditions of candidate PSCells to the terminal equipment in advance, and when the terminal equipment measures that the candidate PSCells meet the switching conditions, it can spontaneously perform PSCell switching. Generally, PSCell handover is also referred to as primary and secondary cell update.

In the R17 communication standard, the conditional handover on the primary base station side (ie, the conditional handover of the primary cell) and the conditional primary-secondary cell handover on the secondary base station side (ie, the conditional update of the primary-secondary cell) cannot be configured at the same time. In other words, if a terminal device in dual connectivity is configured with a candidate primary cell group, it cannot configure a candidate secondary cell group. If you need to configure dual connectivity after handover, you need to wait for the terminal device to switch to the target primary cell, and then configure the secondary cell group by the target primary cell. Through such a secondary cell The group configuration method will increase signaling overhead, cause waste of transmission resources, and also increase the delay in configuring the secondary cell group SCG.

In order to configure the configuration information of the primary cell group and the configuration information of the secondary cell group in the terminal equipment at the same time, thereby reducing signaling overhead and saving transmission resources, the present application provides a secondary cell group configuration method, device, chip and module equipment. The method, device, chip, and module device for configuring the secondary cell group provided in the embodiments of the present application are further described in detail below.

Please refer to FIG. 3 , which is a schematic flowchart of a method for configuring a secondary cell group provided in an embodiment of the present application. As shown in FIG. 3 , the method for configuring a secondary cell group includes the following steps S301-S303. The method shown in FIG. 3 may be executed by the source MN or a chip in the source MN. Alternatively, the subject of execution of the method shown in FIG. 3 may be a candidate MN or a chip in a candidate MN. FIG. 3 illustrates by taking the source MN and the candidate MN as execution bodies of the method as an example.

S301. The source MN sends a conditional handover request message to the candidate MN.

Correspondingly, the candidate MN receives the conditional handover request message from the source MN. Specifically, the source MN selects at least one candidate PCell according to the measurement report of the terminal device, and sends a conditional handover request message to the candidate MN corresponding to each PCell in the at least one candidate PCell. In other words, the source MN may send a conditional handover request message to one or more candidate MNs.

In a possible implementation, the conditional handover request message includes capability information of the terminal device, and the capability information of the terminal device is used to indicate that the terminal device has the capability of simultaneously configuring the candidate MCG and the candidate SCG. Exemplarily, a field A is included in the conditional handover request message, and the value of this field A is used to indicate whether the terminal device has the ability to configure candidate MCGs and candidate SCGs at the same time. When the value of this field A is 0, it indicates that the terminal device It does not have the ability to configure candidate MCGs and candidate SCGs at the same time; when the value of this field A is 1, it indicates that the terminal device has the ability to configure candidate MCGs and candidate SCGs at the same time.

In another possible implementation, in addition to the capability information of the terminal device, the conditional handover request message may also include: the configuration parameters of the source MCG corresponding to the current terminal device, the configuration parameters of the source SCG, and the data radio bearer of the terminal device. configuration information, etc.

S302. The source MN receives a conditional handover request acknowledgment message from the candidate MN, where the conditional handover request acknowledgment message includes configuration information of the candidate MCG and configuration information of the candidate SCG.

Correspondingly, after the candidate MN receives the conditional handover request message from the source MN, if the candidate MN accepts the handover request, the candidate MN and the candidate SN negotiate to configure reasonable wireless parameters for the terminal device, that is, to configure (or understand to determine) the candidate MCG's Configuration information and configuration information of candidate SCGs. Further, the candidate MN sends a conditional handover request confirmation message to the source MN, and the conditional handover request message includes the configuration information of the candidate MCG and the configuration information of the candidate SCG. Specifically, the candidate MN may send the configuration information of the candidate MCG and the configuration information of the candidate SCG to the source MN through a transmission container (also known as a Transparent Container). What needs to be known is that each candidate MCG corresponds to a handover condition (that is, the handover condition of the PCell in the candidate MCG), and the handover condition is set by the source MN, and each candidate SCG may also have a corresponding handover condition (that is, the handover condition in the candidate SCG PSCell update condition), or the candidate SCG may not have a corresponding handover condition.

In other words, if the candidate SCG has a corresponding update condition of the PSCell, the update condition of the PSCell can be set by the candidate MN. ) to place the configuration information of the candidate MCG configured for the terminal device, the configuration information of the candidate SCG, and the PSCell update conditions corresponding to each candidate SCG, and confirm the cancellation through the conditional switching request The message is sent to the source MN. If the candidate SCG does not have corresponding PSCell update conditions, the candidate MN, after receiving the candidate SCG configuration information configured by the candidate SN for the terminal device, places the configuration of the candidate MCG configured for the terminal device in the transmission container (also known as Transparent Container) Information and configuration information of candidate SCGs are sent to the source MN through a conditional handover request confirmation message. It should be noted that the candidate SCG is configured by the candidate SN. When the candidate MN receives the candidate SCG configuration information from the candidate SN, it knows that the configuration mode corresponding to the configuration information of the candidate SCG is the incremental signaling configuration mode or the full configuration mode. . For example, the candidate MN receives the candidate SCG configuration information and indication information 1 from the candidate SN, and the indication information 1 is used to indicate that the configuration mode of the candidate SCG is an incremental signaling configuration mode or a full configuration mode.

Exemplarily, when the capability information of the terminal device in the conditional handover request message includes the ability to configure both the candidate MCG and the candidate SCG, the conditional handover request confirmation message sent by the candidate MN to the source MN includes the configuration of the candidate MCG information and configuration information of candidate SCGs. In the case that the capability information of the terminal device in the conditional handover request message does not include the ability to configure both the candidate MCG and the candidate SCG, the conditional handover request confirmation message sent by the candidate MN to the source MN includes the configuration information of the candidate MCG.

In a possible implementation manner, the conditional handover request acknowledgment message is further used to indicate whether the conditional handover request acknowledgment message includes configuration information of candidate SCGs. Or it can be understood that the conditional handover request confirmation message includes an explicit indication field, and the indication field is used to indicate whether the transmission container (also known as Transparent Container) contains the configuration information of the candidate SCG. For example, the indication field 1 is used to indicate whether the transmission container (also known as Transparent Container) contains the configuration information of the candidate SCG, and when the indication field 1 is 0, it indicates that the transmission container (also known as Transparent Container) does not contain the candidate SCG configuration information, if the indication field 1 is 1, it indicates that the transmission container (also known as Transparent Container) contains the configuration information of the candidate SCG.

Or, in another possible implementation manner, the candidate MN may also send an Xn interface message to the source MN, where the Xn interface message is used to indicate whether the transmission container (also known as Transparent Container) contains the configuration information of the candidate SCG.

In a possible implementation manner, the conditional handover request acknowledgment message further includes first indication information, where the first indication information is used to indicate the configuration mode corresponding to the configuration information of the target side, or the configuration mode corresponding to the configuration information of the candidate SCG. . Wherein, the target side includes candidate MCG and/or candidate SCG; the configuration mode corresponding to the configuration information of the target side is Delta Signaling configuration mode (Delta Signaling) or full configuration mode (Full Configuration); or the configuration information of candidate SCG The corresponding configuration method is Delta Signaling or Full Configuration. Wherein, the incremental signaling configuration mode can be simply understood as configuring the configuration parameters different from the source side configuration parameters among the new configuration parameters in the incremental signaling mode, taking the configuration parameters at the source side as a reference.

In other words, when the configuration mode corresponding to the configuration information of the candidate SCG is the incremental signaling configuration mode, the configuration information of the candidate SCG contains the necessary configuration parameters of the candidate SCG. In this case, the terminal device needs to pass the candidate SCG The configuration information of the candidate SCG and the reference benchmark (that is, the configuration parameters of the source SCG) can be used to know all the configuration parameters of the candidate SCG. When the configuration mode corresponding to the configuration information of the candidate SCG is the full configuration mode, the configuration information of the candidate SCG includes all configuration parameters of the candidate SCG.

Exemplarily, the configuration parameters of the source SCG are: a11, b12, c13, and d14, and the configuration parameters of the candidate SCG are: a11, b12, c33, and d34. In this case, if the configuration information of the candidate SCG corresponds to the configuration mode In the incremental signaling configuration mode, the configuration information of the candidate SCG is used to indicate to replace c13 in the configuration parameters of the source SCG with c33, d14 is replaced with d34; if the configuration mode corresponding to the configuration information of the candidate SCG is the full configuration mode, the configuration information of the candidate SCG is used to indicate that the configuration parameters of the candidate SCG are a11, b12, c33 and d34. It should be noted that the incremental signaling configuration method also obeys some rules, for example, some parameters in the configuration parameters can be configured using incremental signaling, and some parameters cannot be configured using incremental signaling.

S303. The source MN sends the configuration information of the candidate MCG and the configuration information of the candidate SCG to the terminal device.

After the source MN receives the configuration information of the candidate MCG and the configuration information of the candidate SCG from the candidate MN, the configuration information of the candidate MCG and the switching conditions of each candidate MCG (that is, the switching condition of the PCell), as well as the configuration information of the candidate SCG and The handover conditions of each candidate SCG are forwarded to the terminal equipment together. After receiving the configuration information of the candidate MCG and the configuration information of the candidate SCG, the terminal device evaluates whether the candidate primary cell (the primary cell in the candidate MCG) satisfies the handover condition according to the handover conditions of each candidate MCG, and if the handover condition is satisfied, the terminal device According to the configuration information of the candidate MCG, access the target MCG (that is, access the target primary cell), and then access the target SCG according to the configuration information of the candidate SCG associated with the candidate MCG configuration information.

It should be noted that the source MN may send configuration information of multiple candidate MCGs and configuration information of candidate SCGs associated with each MCG configuration to the terminal device, wherein the handover conditions corresponding to each candidate MCG may be the same or different. When a terminal device finds that a candidate MCG meets the handover conditions, it can be understood that the primary cell of the candidate MCG meets the handover conditions. The terminal device accesses the candidate MCG, and then accesses the candidate SCG associated with the candidate MCG (if the candidate SCG does not have a corresponding The update condition of the PSCell), so that the establishment of the dual connection can be completed during the handover process.

In a possible implementation, when the handover condition (also called update execution condition) corresponding to the candidate SCG is not configured, when the terminal device accesses the candidate MN according to the configuration information of the candidate MCG, simultaneously (or in parallel) ) access the candidate SCG according to the configuration information of the candidate SCG. It can be understood that the candidate MCG is associated with (or corresponds to) the candidate SCG, or the candidate MCG and the candidate SCG are associated with (or correspond to) the same candidate MN.

In a possible implementation, if the primary and secondary cell handover conditions (also called update execution conditions) corresponding to the candidate SCG are configured, the terminal device, after accessing the candidate MN according to the configuration information of the candidate MCG, satisfies the candidate SCG When the switching conditions of primary and secondary cells corresponding to the SCG (also referred to as update execution conditions), the terminal device accesses the candidate SCG according to the configuration information of the candidate SCG. In other words, if the wireless connection parameters of the candidate SCG and the PSCell switching conditions of the candidate SCG are included in the transmission container (also known as Transparent Container), after the terminal device accesses the candidate MN according to the configuration information of the candidate MCG, the terminal The device needs to judge whether the PSCell in the candidate SCG meets the PSC handover condition corresponding to the candidate SCG, and access the candidate SCG when the PSC handover condition (update execution condition) corresponding to the candidate SCG is met.

In a possible implementation manner, the number of candidate SCGs may be one or more, and each candidate SCG corresponds to a handover condition between primary and secondary cells. In other words, if the conditional handover request acknowledgment message includes configuration information of multiple candidate SCGs, each candidate SCG configuration information has a corresponding primary-secondary cell handover condition. After the terminal device accesses the candidate MN according to the configuration information of the candidate MCG, the terminal device evaluates whether the PSCell in the candidate SCG satisfies the corresponding PSCell handover condition according to the primary and secondary cell handover conditions (update execution conditions) corresponding to each candidate SCG. When the PSCell meets the handover condition, access the PSCell that meets the handover condition.

Based on the secondary cell group configuration method provided in FIG. 3 , a terminal device performing dual connectivity can configure configuration information of candidate MCGs and candidate SCGs at the same time, which helps reduce signaling overhead and save transmission resources.

In the method shown in FIG. 3, when the configuration mode corresponding to the configuration information of the candidate SCG can be the incremental signaling configuration mode, if the configuration parameters of the source SCG are updated, it may cause the terminal device to If the configuration parameters obtained from the configuration parameters of the source SCG and the configuration information of the candidate SCG do not correspond to the SCG configuration parameters saved by the secondary base station corresponding to the candidate SCG, the terminal device may not be able to successfully access the candidate SCG.

For example, at the first moment, the candidate MN receives the configuration parameters of the source SCG sent by the source MN as: a11, b12, c13 and d14. Further, the candidate MN sends the configuration information of the candidate SCG to the source MN, and the configuration information of the candidate SCG is used to indicate that c13 in the configuration parameters of the source SCG is replaced with c33, and d14 is replaced with d34, that is, the configuration of the candidate SCG can be only c33 and d34. At the second moment after the first moment, the configuration parameters of the source SCG are updated, and the updated configuration parameters of the source SCG are: a11, b121, c13, and d14. In this case, according to the configuration information of the candidate SCG and the updated configuration parameters of the source SCG, the terminal device obtains the complete configuration parameters a11, b121, c33 and d34, which are consistent with the configuration of the candidate SCG saved by the candidate secondary base station side. The parameters are different (a11, b12, c33 and d34). If a terminal device accesses the SCG, there may be a parameter mismatch, which may lead to an abnormal connection.

In order to avoid this situation, the success rate of terminal equipment accessing candidate SCGs is increased. Please refer to FIG. 4 . FIG. 4 is a schematic flowchart of another method for configuring a secondary cell group provided in an embodiment of the present application. As shown in Fig. 4, the method for configuring a secondary cell group includes the following steps S401-S407.

S401. The source MN sends a conditional handover request message to the candidate MN.

S402. The source MN receives a conditional handover request acknowledgment message from the candidate MN, where the conditional handover request acknowledgment message includes the configuration information of the candidate MCG and the configuration information of the candidate SCG.

S403. The source MN sends the configuration information of the candidate MCG and the configuration information of the candidate SCG to the terminal device.

Wherein, for specific implementation manners of S401-S403, reference may be made to the foregoing description of specific implementation manners for S301-S303, and repeated descriptions will not be repeated here.

S404. When the configuration mode corresponding to the configuration information on the target side is an incremental signaling configuration mode, or the configuration mode corresponding to the configuration information of the candidate SCG is an incremental configuration mode, the source MN sends a notification message to the candidate MN, and the The notification message is used to notify that the configuration parameters of the source SCG are updated, and the notification message includes the updated configuration parameters of the source SCG.

In other words, since the configuration mode corresponding to the configuration information on the target side is the incremental signaling configuration mode, or the configuration information of the candidate SCG is configured in the incremental signaling configuration mode, the terminal device needs to refer to the configuration parameters on the source side All configuration parameters of the candidate SCG can be acquired only by combining the configuration information of the target side or the configuration information of the candidate SCG. Since the configuration parameters on the source side (such as the configuration parameters of the source SCG) are variable, when the configuration parameters of the source SCG are updated, the source MN needs to send a notification message to the candidate MN, so that the candidate MN knows that the configuration parameters of the source SCG are updated. update, and then the candidate MN sets the configuration information of the new candidate SCG according to the updated configuration parameters of the source SCG.

In another possible implementation, if the configuration mode corresponding to the configuration information of the target side is the full configuration mode, or the configuration mode corresponding to the configuration information of the candidate SCG is the full configuration mode, in this case, only according to the target side The configuration information of the candidate SCG, or the configuration information of the candidate SCG can determine all (complete) parameters of the candidate SCG. In this case, when the configuration parameters of the source SCG are updated, the source MN does not need to send a notification to the candidate MN information.

S405 (optional). If the updated configuration parameters of the source SCG are associated with the configuration parameters of the candidate SCG, the candidate MN updates the configuration information of the candidate SCG based on the updated configuration parameters of the source SCG.

In other words, after receiving the notification message, the candidate MN determines whether the updated configuration parameters of the source SCG are consistent with those of the candidate MN. It is associated with the configuration parameters of the selected SCG. If the updated configuration parameter of the source SCG is associated with the configuration parameter of the candidate SCG, the candidate MN negotiates with the candidate SN to update the configuration information of the candidate SCG based on the updated configuration parameter of the source SCG. If the configuration parameters of the updated source SCG are not associated with the configuration parameters of the candidate SCG. If the configuration parameters of the candidate SCG adopt the full configuration mode, the candidate MN can ignore the configuration parameters of the updated source SCG, that is, it will not update Configuration information of candidate SCGs.

Where the updated configuration parameters of the source SCG are associated with the configuration parameters of the candidate SCG, it can be understood that the candidate SCG cannot be accurately determined according to the configuration information of the candidate SCG and the updated configuration parameters of the source SCG. The case of all configuration parameters; the case where the updated configuration parameters of the source SCG are not associated with the configuration parameters of the candidate SCG can be understood as the case where all configuration parameters of the candidate SCG can be accurately determined according to the configuration information of the candidate SCG .

Exemplarily, at the first moment, the candidate MN receives the conditional handover request message sent by the source MN, the conditional handover request message indicates that the configuration parameters of the source MCG are a01, b02, c03 and d04, and the configuration parameters of the source SCG are : a11, b12, c13 and d14. Further, the candidate MN sends a conditional handover request confirmation message to the source MN, the configuration information of the candidate MCG in the conditional handover request confirmation message is a01, b02, c23 and d04, and the configuration information of the candidate SCG is used to indicate that the configuration parameters of the source SCG c13 in is replaced by c33, and d14 is replaced by d34, that is, the configuration information of the candidate SCG is c33 and d34. At the second moment after the first moment, the source MN perceives that the configuration parameters of the source SCG are updated, and the source MN sends a notification message to the candidate MN, which includes the updated configuration parameters of the source SCG: a11, b121, c13 and d14. In this case, it can be deduced that according to the configuration information of the candidate SCG and the updated configuration parameters of the source SCG, the determined configuration parameters are: a11, b121, c33 and d34, which are different from the configuration parameters of the initial candidate SCG (a11, b12 , c33 and d34) are different, it can be considered that the updated configuration parameters of the source SCG are associated with the configuration parameters of the candidate SCG. Further, the candidate MN sends the updated candidate SCG configuration information and candidate MCG configuration information to the source MN, wherein the updated candidate SCG configuration information is used to indicate that b121 in the configuration parameters of the source SCG is replaced with b12, c13 Replace with c33, d14 with d34, that is, the configuration information of the candidate SCG is b12, c33 and d34, and the configuration information of the candidate MCG is a01, b02, c23 and d04.

S406 (optional), the candidate MN sends the updated configuration information of the candidate SCG and the configuration information of the candidate MCG to the source MN.

In other words, if the updated source SCG configuration parameters on the source MN side are associated with candidate SCG configuration parameters, the source MN may also receive the updated candidate SCG configuration information and candidate MCG configuration information from the candidate MN, The updated configuration information of the candidate SCG is set based on the updated configuration parameters of the source SCG.

S407 (optional), the source MN sends the updated configuration information of the candidate SCG and the configuration information of the candidate MCG to the terminal device.

The source MN sends the updated configuration information of the candidate SCG and the configuration information of the candidate MCG to the terminal device, and further, the terminal device updates the configuration of the candidate SCG stored by itself based on the updated configuration information of the candidate SCG and the configuration information of the candidate MCG information and configuration information of candidate MCGs.

It can be seen that, through the secondary cell group configuration method provided in Figure 4, in the case of configuring the configuration information of the candidate SCG through incremental signaling configuration, the source MN will notify the candidate MN of the updated source SCG parameters, so that the candidate MN The configuration information of the updated candidate SCG can be set according to the updated source SCG parameters, so as to avoid the situation that the candidate SCG configuration parameters determined by the terminal device according to the candidate SCG configuration information do not correspond to the SCG configuration parameters saved by the candidate MN. In this case, the success rate of the terminal device accessing the candidate SCG is improved.

Please refer to FIG. 5 . FIG. 5 is a schematic structural diagram of a device for configuring a secondary cell group according to an embodiment of the present invention. The device for configuring a secondary cell group may be a source base station or a device (such as a chip) with a source base station function. Specifically, as shown in FIG. 5 , the apparatus 500 for configuring a secondary cell group may include:

A sending unit 501, configured to send a conditional handover request message to a candidate master base station MN;

The receiving unit 502 is configured to receive a conditional handover request confirmation message from a candidate MN, where the conditional handover request confirmation message includes configuration information of a candidate primary cell group MCG and configuration information of a candidate secondary cell group SCG;

The sending unit 501 is further configured to send the configuration information of the candidate MCG and the configuration information of the candidate SCG to the terminal device.

In a possible implementation manner, the conditional handover request acknowledgment message further includes first indication information, where the first indication information is used to indicate the configuration mode corresponding to the configuration information on the target side, or the configuration mode corresponding to the configuration information of the candidate SCG; Wherein, the target side includes candidate MCG and candidate SCG; the configuration mode corresponding to the configuration information of the target side is incremental signaling configuration mode or full configuration mode; the configuration mode corresponding to the configuration information of the candidate SCG is incremental signaling configuration mode or full configuration.

In a possible implementation method, the configuration mode corresponding to the configuration information of the target side is an incremental signaling configuration mode, or the configuration mode corresponding to the configuration information of the candidate SCG is an incremental signaling configuration mode, and the sending unit 501 is configured to A notification message is sent to the candidate MN, where the notification message is used to notify that the configuration parameters of the source SCG are updated, and the notification message includes the updated configuration parameters of the source SCG.

In a possible implementation method, the receiving unit 502 is configured to receive the updated configuration information of the candidate secondary cell group SCG and the configuration information of the candidate primary cell group MCG from the candidate MN, where the updated configuration information of the candidate SCG is The configuration parameters of the updated source SCG are set as the basis.

In a possible implementation method, the configuration information of the candidate SCG is used to indicate whether the conditional handover request confirmation message includes the configuration information of the candidate SCG. By explicitly indicating whether the transmission container contains the configuration information of the candidate SCG in the interface signaling, the source MN is aware of whether the candidate MN needs to be notified in time to update the configuration information of the candidate SCG after the configuration parameters of the source-side SCG are updated, and at the same time Preventing the source MN from parsing the content in the transmission container can reduce the processing complexity of the source MN.

In a possible embodiment, the device for configuring the secondary cell group may be a candidate base station or a device (such as a chip) having a function of a candidate base station. Wherein, the device 500 for configuring the secondary cell group includes:

A receiving unit 502, configured to receive a conditional handover request message from the source master base station MN;

The sending unit 501 is configured to send a conditional handover request confirmation message to the source MN, where the conditional handover request confirmation message includes configuration information of a candidate primary cell group MCG and configuration information of a candidate secondary cell group SCG.

In a possible implementation method, the conditional handover request acknowledgment message further includes first indication information, where the first indication information is used to indicate the configuration mode corresponding to the configuration information on the target side, or the configuration party corresponding to the configuration information of the candidate SCG. Wherein, the target side includes candidate MCG and candidate SCG; the configuration mode corresponding to the configuration information of the target side is incremental signaling configuration mode or full configuration mode; the configuration mode corresponding to the configuration information of the candidate SCG is incremental signaling configuration mode or full configuration mode.

In a possible implementation method, the device for configuring the secondary cell group further includes a processing unit 503. In this case, the configuration method corresponding to the configuration information on the target side is the incremental signaling configuration method, or the configuration information corresponding to the candidate SCG The configuration method is an incremental signaling configuration method, and the receiving unit 502 is configured to receive a notification message from the source MN, the notification message is used to notify the configuration parameters of the source SCG to be updated, and the notification message includes the updated configuration parameters of the source SCG The processing unit 503, if the configuration parameter of the updated source SCG is associated with the configuration parameter of the candidate SCG, the processing unit 503 is configured to update the configuration information of the candidate SCG based on the updated configuration parameter of the source SCG; the sending unit 501, It is used to send the configuration information of the updated candidate SCG.

Please refer to FIG. 6. FIG. 6 is a schematic structural diagram of an apparatus for configuring a secondary cell group according to an embodiment of the present invention. The apparatus for configuring a secondary cell group may be a terminal device or a device (such as a chip) with terminal device functions. Specifically, as shown in FIG. 6 , the apparatus 600 for configuring a secondary cell group may include:

The receiving unit 601 is configured to receive configuration information of a candidate primary cell group MCG and configuration information of a candidate secondary cell group SCG from a source master base station MN.

In a possible implementation, the apparatus 600 further includes an access unit 602. If the primary and secondary cell handover conditions corresponding to the candidate SCG are not configured, when accessing the candidate MN according to the configuration information of the candidate MCG, the access unit 602, configured to access the candidate SCG according to the configuration information of the candidate SCG.

In a possible implementation, if the primary-secondary cell handover condition corresponding to the candidate SCG is configured, after accessing the candidate MN according to the configuration information of the candidate MCG, when the primary-secondary cell handover condition corresponding to the candidate SCG is met, The accessing unit 602 is configured to access the candidate SCG according to the configuration information of the candidate SCG.

Referring to FIG. 7, FIG. 7 is a schematic structural diagram of a base station provided by an embodiment of the present invention. The base station 700 may include a memory 701 and a processor 702 . Optionally, a communication interface 703 is also included. The memory 701, the processor 702 and the communication interface 703 are connected by one or more communication buses. Wherein, the communication interface 703 is controlled by the processor 702 for sending and receiving information. The memory 701 may include read-only memory and random-access memory, and provides instructions and data to the processor 702 . A portion of memory 701 may also include non-volatile random access memory. The communication interface 703 is used to receive or send data. The processor 702 can be a central processing unit (Central Processing Unit, CPU), and the processor 702 can also be other general-purpose processors, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC ), off-the-shelf programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor, and optionally, the processor 702 may also be any conventional processor. in:

The memory 701 is used for storing program instructions.

The processor 702 is configured to call the program instructions stored in the memory 701 .

The processor 702 calls the program instructions stored in the memory 701 to make the base station 700 perform the following operations: send a conditional handover request message to the candidate master base station MN; receive a conditional handover request confirmation message from the candidate MN, the conditional handover request confirmation message includes the candidate master base station MN; The configuration information of the cell group MCG and the configuration information of the candidate secondary cell group SCG; sending the configuration information of the candidate MCG and the configuration information of the candidate SCG to the terminal device.

In a possible implementation method, the configuration mode corresponding to the configuration information on the target side is the incremental signaling configuration mode, or the configuration mode corresponding to the configuration information of the candidate SCG is the incremental signaling configuration mode, and the processor 702 is further configured to: A notification message is sent to the candidate MN, where the notification message is used to notify that the configuration parameters of the source SCG are updated, and the notification message includes the updated configuration parameters of the source SCG.

In a possible implementation method, the processor 702 is further configured to receive the updated configuration information of the candidate secondary cell group SCG and the configuration information of the candidate primary cell group MCG from the candidate MN, and the updated configuration information of the candidate SCG is The configuration parameters of the updated source SCG are set as the basis.

In one embodiment, the base station 700 also performs the following operations: receiving a conditional handover request message from the source master base station MN; sending a conditional handover request confirmation message to the source MN, the conditional handover request confirmation message including the configuration of the candidate master cell group MCG information and configuration information of candidate SCGs.

In a possible implementation method, the configuration mode corresponding to the configuration information of the target side is the incremental signaling configuration mode, or the configuration mode corresponding to the configuration information of the candidate SCG is the incremental signaling configuration mode, and the processor 702 is further configured to Receive a notification message from the source MN, the notification message is used to notify that the configuration parameters of the source SCG are updated, and the notification message includes the configuration parameters of the updated source SCG; if the configuration parameters of the updated source SCG are related to the configuration parameters of the candidate SCG In connection, the processor 702 is further configured to update the configuration information of the candidate SCG based on the updated configuration parameters of the source SCG; the processor 702. It is further configured to send the updated configuration information of the candidate SCG.

Please refer to FIG. 8. FIG. 8 is a schematic structural diagram of a terminal device provided by an embodiment of the present invention. The terminal device 800 may include a memory 801 and a processor 802 . Optionally, a communication interface 803 is also included. The memory 801, the processor 802 and the communication interface 803 are connected by one or more communication buses. Wherein, the communication interface 803 is controlled by the processor 802 for sending and receiving information. The memory 801 may include read-only memory and random-access memory, and provides instructions and data to the processor 802 . A portion of memory 801 may also include non-volatile random access memory. The communication interface 803 is used to receive or send data. The processor 802 can be a central processing unit (Central Processing Unit, CPU), and the processor 802 can also be other general processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC) ), off-the-shelf programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor, and optionally, the processor 802 may also be any conventional processor. in:

The memory 801 is used for storing program instructions.

The processor 802 is configured to invoke program instructions stored in the memory 801 .

The processor 802 invokes the program instructions stored in the memory 801 to make the terminal device 800 perform the following operations: receive configuration information of a candidate primary cell group MCG and configuration information of a candidate secondary cell group SCG from the source master base station MN.

In a possible implementation, the device further includes an access unit. If the master-secondary cell handover condition corresponding to the candidate SCG is not configured, when accessing the candidate MN according to the configuration information of the candidate MCG, the processor 802 also uses to access the candidate SCG according to the configuration information of the candidate SCG.

In a possible implementation, if the primary-secondary cell handover condition corresponding to the candidate SCG is configured, after accessing the candidate MN according to the configuration information of the candidate MCG, when the primary-secondary cell handover condition corresponding to the candidate SCG is met, The processor 802 is further configured to access the candidate SCG according to the configuration information of the candidate SCG.

It should be noted that for the content not mentioned in the embodiment corresponding to FIG. 5-FIG. 8 and the specific implementation manner of each step, refer to the embodiment shown in FIG. 3 or FIG. 4 and the foregoing content, and details are not repeated here.

The embodiment of the present application also provides a chip, which can execute the relevant steps of the source primary base station (or candidate primary base station) in the foregoing method embodiments. The chip includes a processor and a communication interface, and the processor is configured to perform the following operations: send a conditional handover request message to a candidate main base station MN; receive a conditional handover request confirmation message from a candidate MN, and the conditional handover request confirmation message includes a candidate The configuration information of the primary cell group MCG and the configuration information of the candidate secondary cell group SCG; sending the configuration information of the candidate MCG and the configuration information of the candidate SCG to the terminal device.

In a possible implementation manner, the conditional handover request acknowledgment message further includes first indication information, and the first indication The display information is used to indicate the configuration mode corresponding to the configuration information of the target side, or the configuration mode corresponding to the configuration information of the candidate SCG; wherein, the target side includes candidate MCGs and candidate SCGs; the configuration mode corresponding to the configuration information of the target side is incremental A signaling configuration mode or a full configuration mode; the configuration mode corresponding to the configuration information of the candidate SCG is an incremental signaling configuration mode or a full configuration mode.

In a possible implementation method, the configuration mode corresponding to the configuration information on the target side is an incremental signaling configuration mode, or the configuration mode corresponding to the configuration information of the candidate SCG is an incremental signaling configuration mode, and the processor is further configured to, The candidate MN sends a notification message, which is used to notify that the configuration parameters of the source SCG are updated, and the notification message includes the updated configuration parameters of the source SCG.

In a possible implementation method, the processor is further configured to receive the updated configuration information of the candidate secondary cell group SCG and the configuration information of the candidate primary cell group MCG from the candidate MN, and the updated configuration information of the candidate SCG is updated to Set based on the configuration parameters of the source SCG afterward.

In one embodiment, the processor is configured to perform the following operations: receive a conditional handover request message from the source master base station MN; send a conditional handover request confirmation message to the source MN, where the conditional handover request confirmation message includes a candidate primary cell group The configuration information of the MCG and the configuration information of the candidate secondary cell group SCG.

In a possible implementation method, the configuration mode corresponding to the configuration information of the target side is an incremental signaling configuration mode, or the configuration mode corresponding to the configuration information of the candidate SCG is an incremental signaling configuration mode, and the processor is further configured to receive A notification message from the source MN, the notification message is used to notify that the configuration parameters of the source SCG are updated, and the notification message includes the updated configuration parameters of the source SCG; if the updated configuration parameters of the source SCG are associated with the configuration parameters of the candidate SCG , based on the updated configuration parameters of the source SCG, update the configuration information of the candidate SCGs; and send the updated configuration information of the candidate SCGs.

The embodiment of the present application also provides another chip, which can execute the relevant steps of the terminal device in the foregoing method embodiments. The chip includes a processor and a communication interface, and the processor is configured to perform the following operations: receiving configuration information of a candidate primary cell group MCG and configuration information of a candidate secondary cell group SCG from a source master base station MN.

In a possible implementation, the device further includes an access unit, and if the primary-secondary cell handover condition corresponding to the candidate SCG is not configured, when accessing the candidate MN according to the configuration information of the candidate MCG, the processor is configured to: The configuration information of the candidate SCG is accessed to the candidate SCG.

In a possible implementation, if the primary-secondary cell handover condition corresponding to the candidate SCG is configured, after accessing the candidate MN according to the configuration information of the candidate MCG, when the primary-secondary cell handover condition corresponding to the candidate SCG is met, The processor is configured to access the candidate SCG according to the configuration information of the candidate SCG.

As shown in FIG. 9 , FIG. 9 is a schematic structural diagram of a module device provided by an embodiment of the present application. The module device 900 can perform related steps of the source master base station or the candidate master base station in the foregoing method embodiments, and the module device 900 includes: a communication module 901 , a power module 902 , a storage module 903 and a chip 904 . Wherein, the power supply module 902 is used to provide electric energy for the module equipment; the storage module 903 is used to store data and instructions; the communication module 901 is used for internal communication of the module equipment, or for The module device communicates with external devices; the chip 904 is used to: send a conditional handover request message to the candidate master base station MN; receive a conditional handover request confirmation message from the candidate MN, the conditional handover request confirmation message includes the candidate master cell group MCG configuration information and candidate secondary cell group SCG configuration information; sending the candidate MCG configuration information and candidate SCG configuration information to the terminal device.

In a possible implementation method, the configuration mode corresponding to the configuration information of the target side is the incremental signaling configuration mode, or the configuration mode corresponding to the configuration information of the candidate SCG is the incremental signaling configuration mode, and the chip 904 is also used to send The candidate MN sends a notification message, which is used to notify that the configuration parameters of the source SCG are updated, and the notification message includes the updated configuration parameters of the source SCG.

In a possible implementation method, the chip 904 is also configured to receive the updated configuration information of the candidate secondary cell group SCG and the configuration information of the candidate primary cell group MCG from the candidate MN, and the updated configuration information of the candidate SCG is updated to Set based on the configuration parameters of the source SCG afterward.

In one embodiment, the chip 904 is configured to: receive a conditional handover request message from the source master base station MN; send a conditional handover request confirmation message to the source MN, where the conditional handover request confirmation message includes the configuration information of the candidate master cell group MCG and Configuration information of candidate SCGs.

In a possible implementation method, the conditional handover request confirmation message further includes first indication information, where the first indication information is used to indicate the configuration mode corresponding to the configuration information on the target side, or the configuration mode corresponding to the configuration information of the candidate SCG; Wherein, the target side includes candidate MCGs and candidate SCGs; the configuration mode corresponding to the configuration information of the target side is Incremental signaling configuration mode or full configuration mode; the configuration mode corresponding to the configuration information of the candidate SCG is incremental signaling configuration mode or full configuration mode.

In a possible implementation method, the configuration mode corresponding to the configuration information of the target side is the incremental signaling configuration mode, or the configuration mode corresponding to the configuration information of the candidate SCG is the incremental signaling configuration mode, and the chip 904 is also used to receive A notification message from the source MN, the notification message is used to notify that the configuration parameters of the source SCG are updated, and the notification message includes the updated configuration parameters of the source SCG; if the updated configuration parameters of the source SCG are associated with the configuration parameters of the candidate SCG , based on the updated configuration parameters of the source SCG, update the configuration information of the candidate SCGs; and send the updated configuration information of the candidate SCGs.

As shown in FIG. 10 , FIG. 10 is a schematic structural diagram of a module device provided by an embodiment of the present application. The module device 1000 can execute the relevant steps of the terminal device in the foregoing method embodiments, and the module device 1000 includes: a communication module 1001 , a power supply module 1002 , a storage module 1003 and a chip 1004 . Wherein, the power supply module 1002 is used to provide electric energy for the module device; the storage module 1003 is used to store data and instructions; the communication module 1001 is used for internal communication of the module device, or for The module device communicates with external devices; the chip 1004 is configured to: receive the configuration information of the candidate primary cell group MCG and the configuration information of the candidate secondary cell group SCG from the source master base station MN.

In a possible implementation, the device further includes an access unit. If the primary and secondary cell handover conditions corresponding to the candidate SCG are not configured, when accessing the candidate MN according to the configuration information of the candidate MCG, the chip 1004 is used to simultaneously Access the candidate SCG.

In a possible implementation, if the primary-secondary cell handover condition corresponding to the candidate SCG is configured, after accessing the candidate MN according to the configuration information of the candidate MCG, when the primary-secondary cell handover condition corresponding to the candidate SCG is met, The chip 1004 is configured to access the candidate SCG according to the configuration information of the candidate SCG.

The embodiment of the present application also provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instruction is run on a processor, the method flow of the above-mentioned method embodiment is implemented.

The embodiment of the present application further provides a computer program product. When the computer program product is run on a processor, the method flow of the above method embodiment is realized.

Regarding each device described in the above embodiments, each module/unit contained in the product may be a software module/unit, or a hardware module/unit, or may be partly a software module/unit and partly a hardware module/unit. . For example, for each device applied to or integrated in a chip, each module/unit contained in the product may be realized by hardware such as a circuit, or at least part of the modules/units may be realized by a software program, and the software program runs The processor is integrated inside the chip, and the remaining (if any) modules/units can be realized by hardware such as circuits; Realized by means of hardware such as circuits, different modules/units can be located in the same part of the chip module (such as chips, circuit modules, etc.) or in different components, or at least part of the modules/units can be implemented in the form of software programs, the software program It runs on the processor integrated inside the chip module, and the remaining (if any) modules/units can use hardware such as circuits For each device or product applied to or integrated in the terminal, the modules/units contained in it can all be realized by hardware such as circuits, and different modules/units can be located in the same component (for example, chips, circuits, etc.) in the terminal. modules, etc.) or in different components, or at least some of the modules/units can be implemented in the form of software programs that run on the processor integrated in the terminal, and the remaining (if any) modules/units can be implemented using hardware such as circuits way to achieve.

It should be noted that for the foregoing method embodiments, for the sake of simple description, they are expressed as a series of action combinations, but those skilled in the art should know that the present application is not limited by the described action sequence. Because of this application, certain operations may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification belong to preferred embodiments, and the actions and modules involved are not necessarily required by this application.

The descriptions of the various embodiments provided in this application can refer to each other, and the descriptions of each embodiment have their own emphases. For the parts that are not described in detail in a certain embodiment, you can refer to the relevant descriptions of other embodiments. For the convenience and brevity of description, for example, regarding the functions and operations of the various devices and devices provided in the embodiments of the present application, reference may be made to the relevant descriptions of the method embodiments of the present application. May be cross-referenced, combined or cited.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present application. scope.

Claims

A method for configuring a secondary cell group, wherein the method is applied to a source master base station MN, and the method includes:

Send a conditional handover request message to the candidate MN;

receiving a conditional handover request acknowledgment message from the candidate MN, where the conditional handover request acknowledgment message includes configuration information of a candidate primary cell group MCG and configuration information of a candidate secondary cell group SCG;

Send the configuration information of the candidate MCG and the configuration information of the candidate SCG to the terminal device.
The method according to claim 1, wherein the conditional handover request message includes capability information of the terminal device, and the capability information of the terminal device is used to indicate that the terminal device has simultaneously configured candidate MCG and candidate SCG Ability.
The method according to claim 1 or 2, wherein the conditional handover request acknowledgment message further includes first indication information, and the first indication information is used to indicate the configuration mode corresponding to the configuration information on the target side, or the Describe the configuration mode corresponding to the configuration information of the candidate SCG;

Wherein, the target side includes the candidate MCG and the candidate SCG; the configuration mode corresponding to the configuration information of the target side is an incremental signaling configuration mode or a full configuration mode; the configuration information corresponding to the candidate SCG The mode is incremental signaling configuration mode or full configuration mode.
According to the method described in any one of claims 1-3, it is characterized in that,

The candidate SCG is configured by the candidate secondary base station SN, and the candidate MN learns from the candidate SN that the configuration mode corresponding to the configuration information of the candidate SCG is an incremental signaling configuration mode or a full configuration mode.
The method according to any one of claims 1-4, wherein the configuration mode corresponding to the configuration information of the target side is an incremental signaling configuration mode, or the configuration mode corresponding to the configuration information of the candidate SCG In an incremental signaling configuration mode, the method further includes:

Sending a notification message to the candidate MN, where the notification message is used to notify that the configuration parameters of the source SCG are updated, and the notification message includes the updated configuration parameters of the source SCG.
The method according to claim 5, wherein the method further comprises:

receiving updated configuration information of candidate SCGs and configuration information of candidate MCGs from the candidate MN, where the updated configuration information of candidate SCGs is set based on the updated configuration parameters of the source SCG.
The method according to claim 1, 5 or 6, wherein the configuration information of the candidate SCG is used to indicate whether the conditional handover request confirmation message includes the configuration information of the candidate SCG.
A method for configuring a secondary cell group, wherein the method is applied to a candidate master base station MN, and the method includes:

Receive a conditional handover request message from the source MN;

Sending a conditional handover request acknowledgment message to the source MN, where the conditional handover request acknowledgment message includes configuration information of a candidate primary cell group MCG and configuration information of a candidate secondary cell group SCG.
The method according to claim 8, wherein the conditional handover request message includes capability information of the terminal device, and the capability information of the terminal device is used to indicate that the terminal device has simultaneously configured candidate MCG and candidate SCG Ability.
The method according to claim 8, wherein the conditional handover request acknowledgment message further includes first indication information, and the first indication information is used to indicate the configuration mode corresponding to the configuration information on the target side, or the candidate SCG The configuration method corresponding to the configuration information;

Wherein, the target side includes the candidate MCG and the candidate SCG; the configuration mode corresponding to the configuration information of the target side is an incremental signaling configuration mode or a full configuration mode; the configuration information corresponding to the candidate SCG The mode is incremental signaling configuration mode or full configuration mode.
The method according to any one of claims 8-10, wherein the candidate SCG is configured by a candidate secondary base station SN, and the method further comprises:

receiving the configuration information of the candidate SCG from the candidate SN, and learning that the configuration mode corresponding to the configuration information of the candidate SCG is an incremental signaling configuration mode or a full configuration mode.
The method according to any one of claims 8-11, wherein the configuration mode corresponding to the configuration information of the target side is an incremental signaling configuration mode, or the configuration mode corresponding to the configuration information of the candidate SCG In an incremental signaling configuration mode, the method further includes:

receiving a notification message from the source MN, where the notification message is used to notify that the configuration parameters of the source SCG are updated, and the notification message includes the updated configuration parameters of the source SCG;

If the updated configuration parameter of the source SCG is associated with the configuration parameter of the candidate SCG, based on the updated configuration parameter of the source SCG, update the configuration information of the candidate SCG;

Send the updated configuration information of the candidate SCG and the configuration information of the candidate MCG to the source MN.
The method according to any one of claims 8-12, wherein the configuration information of the candidate SCG is used to indicate whether the conditional handover request confirmation message includes the configuration information of the candidate SCG.
A method for configuring a secondary cell group, wherein the method is applied to a terminal device, and the method includes:

The configuration information of the candidate primary cell group MCG and the configuration information of the candidate secondary cell group SCG are received from the source primary base station MN.
The method according to claim 14, wherein the method further comprises:

If the primary-secondary cell handover condition corresponding to the candidate SCG is not configured, when accessing the candidate MN according to the configuration information of the candidate MCG, access the candidate SCG according to the configuration information of the candidate SCG.
The method according to claim 14, wherein the method further comprises:

If the primary-secondary cell handover condition corresponding to the candidate SCG is configured, after accessing the candidate MN according to the configuration information of the candidate MCG, when the primary-secondary cell handover condition corresponding to the candidate SCG is satisfied, according to the The configuration information of the candidate SCG is accessed to the candidate SCG.
The method according to claim 16, wherein the number of the candidate SCGs is one or more, and each candidate SCG corresponds to a handover condition between primary and secondary cells.
A device for configuring a secondary cell group, characterized in that the device includes:

A sending unit, configured to send a conditional handover request message to the candidate main base station MN;

A receiving unit, configured to receive a conditional handover request confirmation message from the candidate MN, where the conditional handover request confirmation message includes configuration information of a candidate primary cell group MCG and configuration information of a candidate secondary cell group SCG;

The sending unit is further configured to send the configuration information of the candidate MCG and the configuration information of the candidate SCG to the terminal device.
A device for configuring a secondary cell group, characterized in that the device includes:

A receiving unit, configured to receive a conditional handover request message from the source main base station MN;

A sending unit, configured to send a conditional handover request confirmation message to the source MN, where the conditional handover request confirmation message includes configuration information of a candidate primary cell group MCG and configuration information of a candidate secondary cell group SCG.
A device for configuring a secondary cell group, characterized in that the device includes:

The receiving unit is configured to receive the configuration information of the candidate primary cell group MCG and the configuration information of the candidate secondary cell group SCG from the source master base station MN.
A chip, characterized in that it includes a processor and a communication interface, the processor is configured to perform the following operations:

Send a conditional handover request message to the candidate main base station MN;

receiving a conditional handover request acknowledgment message from the candidate MN, where the conditional handover request acknowledgment message includes configuration information of a candidate primary cell group MCG and configuration information of a candidate secondary cell group SCG;

Send the configuration information of the candidate MCG and the configuration information of the candidate SCG to the terminal device.
A chip, characterized in that it includes a processor and a communication interface, the processor is configured to perform the following operations:

receiving a conditional handover request message from the source main base station MN;

Send a conditional handover request acknowledgment message to the source MN, the conditional handover request acknowledgment message includes The configuration information of the cell group MCG and the configuration information of the candidate secondary cell group SCG.
A chip, characterized in that it includes a processor and a communication interface, the processor is configured to perform the following operations:

The configuration information of the candidate primary cell group MCG and the configuration information of the candidate secondary cell group SCG are received from the source primary base station MN.
A module device, characterized in that the module device includes a communication module, a power supply module, a storage module, and a chip, wherein:

The power supply module is used to provide electric energy for the module equipment;

The storage module is used to store data and instructions;

The communication module is used for internal communication of the module equipment, or for the communication between the module equipment and external equipment;

The chip is configured to: receive a conditional handover request acknowledgment message from the candidate MN, the conditional handover request acknowledgment message includes the configuration information of the candidate primary cell group MCG and the configuration information of the candidate secondary cell group SCG; Configuration information of the candidate MCG and configuration information of the candidate SCG.
A module device, characterized in that the module device includes a communication module, a power supply module, a storage module, and a chip, wherein:

The power supply module is used to provide electric energy for the module equipment;

The storage module is used to store data and instructions;

The communication module is used for internal communication of the module equipment, or for the communication between the module equipment and external equipment;

The chip is used to: receive a conditional handover request message from the source master base station MN; send a conditional handover request confirmation message to the source MN, and the conditional handover request confirmation message includes the configuration information of the candidate primary cell group MCG and the candidate secondary cell Configuration information of the group SCG.
A module device, characterized in that the module device includes a communication module, a power supply module, a storage module, and a chip, wherein:

The power supply module is used to provide electric energy for the module equipment;

The storage module is used to store data and instructions;

The communication module is used for internal communication of the module equipment, or for the communication between the module equipment and external equipment;

The chip is configured to: receive the configuration information of the candidate primary cell group MCG and the configuration information of the candidate secondary cell group SCG from the source master base station MN.
A base station, characterized by comprising a memory and a processor, the memory is used to store a computer program, the computer program includes program instructions, the processor is configured to invoke the program instructions, and execute the The method described in any one of claims 1-7 or claims 8-13.
A terminal device, characterized in that it includes a memory and a processor, the memory is used to store a computer program, the computer program includes program instructions, the processor is configured to invoke the program instructions, and perform the following steps: The method described in any one of 14-17.
A computer-readable storage medium, characterized in that computer-readable instructions are stored in the computer-readable medium, and when the computer-readable instructions are run on a communication device, the communication device is made to execute claims 1-7 Or the method described in any one of claims 8-13, or causing the communication device to perform the method described in any one of claims 14-17.